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Product Detailed Parameters
- Description：54AC574 - OCTAL D-TYPE FLIP-FLOP
- Series：54AC
- Mfr：National Semiconductor
- Package：Bulk
- Function：Standard
- Type：D-Type
- Output Type：Tri-State, Non-Inverted
- Number of Elements：1
- Number of Bits per Element：8
- Clock Frequency：85 MHz
- Max Propagation Delay @ V, Max CL：11.5ns @ 5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：24mA, 24mA
- Voltage - Supply：2V ~ 6V
- Current - Quiescent (Iq)：80 µA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Supplier Device Package：20-CERDIP
- Package / Case：20-CDIP (0.300", 7.62mm)
- Input Capacitance：4.5 pF
- Grade：-
- Qualification：-
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Overview
The JM54AC574SRA-RH is a radiation-hardened octal D-type flip-flop manufactured by National Semiconductor. It features three-state outputs and operates within a voltage range of 2V to 6V for the AC series. The component is housed in a hermetic ceramic package, ensuring reliability in extreme conditions. It provides total ionizing dose hardness up to 300 krad(Si) and immunity to single event latch-up up to 110 MeV.cm²/mg. Designed for aerospace applications, it supports military temperature ranges from -55°C to +125°C and complies with SMD specifications.
Feature Summary
- Radiation hardened design suitable for aerospace environments
- Hermetic ceramic packaging for environmental protection
- High immunity to single event effects and latch-up
Applications
- Aerospace satellite systems
- Military avionics data buses
- Harsh environment computing modules
Procurement Notes
Verify the specific suffix 'SRA-RH' against official National Semiconductor or Texas Instruments documentation to confirm radiation hardening status and hermetic sealing requirements. Ensure procurement channels provide traceability to original manufacturer standards. Confirm compliance with relevant military specifications such as SMD or QML before finalizing orders.
Selection Notes
Select this component when high radiation tolerance and long-term reliability in space are critical. The hermetic package distinguishes it from standard commercial logic families. Consider the operating voltage compatibility with existing 5V or 3.3V systems within the specified 2V-6V range. Evaluate thermal management needs given the wide operating temperature range.
Part Context
This part belongs to the 54AC/54ACT family of high-speed CMOS logic functions. The 54AC574 variant specifically provides octal D-type flip-flops with three-state outputs. The National Semiconductor brand indicates its origin before the company's acquisition by Texas Instruments, which continues to support legacy military-grade components.
Replacement Considerations
Check for equivalent parts from other manufacturers offering similar radiation hardness levels and hermetic packages. Verify pinout compatibility and electrical characteristics match the original specifications exactly.
